PowerMite DD/voltage test question

[TexFlood]

I've had a PowerMite DD running my LEDWiz boards for the last year or so without problems, I love the little bugger.  Recently I upgraded my MAME computer and had to move the PowerMite to the new computer.  It was working at first, but during my messing with the control panel it stopped working at some point so now I'm trying to trouble shoot.

The LEDs work if I configure the LEDWiz to use USB power and test each button so it's not an LEDWiz issue.  So my next step was to check my PowerMite to see if I had fried the little guy through my migration to the new computer. 

Is there an easy way to tell if the PowerMite is still working by just looking at it (ie is there a power light)?  I know I could test this out a number of ways by connecting LEDs and such, but I'm wondering how you test for this right from the Powermite itself.  In the same respect, how could I test that a power cable coming from the PC power supply is working properly - that is besides connecting it to a device and checking to see if it runs?

As a long term solution (and to satisfy my love of tools), I'd like to buy a testing instrument that will tell me if a 5v or 12v connection is hot.  Any suggestions on what would work well for this purpose?  Is there anything like the 120/240 volt tester below that is cheap and works for these low voltage connections?

[whammoed]

I suppose you don't have a multimeter handy?
What version did you buy?  Basic, Hi, Lo?
It would take a lot of current to actually burn up one of the traces...perhaps somethings just not making good connection?

[TexFlood]

Thanks for the info whammoed, I'll have to look into getting a multimeter at some point.  In my case it turned out to be a blown fuse in the 5v line to the LEDWizs.  The combination of a 4 player CP with 3 LedWizs and 11 USB devices makes troubleshooting a bit daunting if you don't follow the proper steps... 

Anyways, I'm back up and running!  Except for the 1 USB device that isn't being recognized 

[whammoed]

No problem.  Glad you're getting it all worked out.  With that much going on, you may consider bumping a mulitmeter up the priority list...it really does make troubleshooting easier.
Have a Harbor Freight near you?  These are often on sale for 2.99
http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=92020

[Ummon]

Didn't polaris make this device?  I'd ask him.

[Hoopz]

Didn't polaris make this device?  I'd ask him.

No, it's whammoed's.  Check our his profile.

[TexFlood]

These boards are a great way to get power to your MAME machine. 

I didn't say this in my op, but I just ordered another one of these guys for research purposes.  I love the fact that I can mount a power distributor by mounting this little board on 4 PCB mounts.  It's real clean!